What are Noise-Cancelling Headphones?
Noise-cancelling headphones use active noise control or cancellation technology to reduce ambient sound. This is usually achieved through one of the following methods:
- Active Noise Cancellation (ANC): uses one or more microphones to pick up ambient sound, and then produces a "negative" sound wave to cancel it out.
- Passive Noise Isolation: uses ear cups or ear pads with a thick, cushioned material to block sound from entering the ears.
Types of Noise-Cancelling Headphones
Noise-cancelling headphones can be categorized into several types:
- Circular Polar Pattern (CPP) - a type of noise isolation that reduces ambient sound by canceling it out in both forward and backward directions.
- Planar Magnetic Pattern (PMP) - uses magnetic forces to create an omnidirectional sound field, reducing ambient sound.
- Acoustic Suspension (AS) - uses advanced materials and designs to reduce vibration and noise transmission.
How to Shop for Noise-Cancelling Headphones
When shopping for noise-cancelling headphones, consider the following factors:
- Active Noise Cancellation (ANC): look for headphones with ANC technology and a good noise cancellation rating.
- Sound Quality: prioritize sound quality, especially if you plan to use the headphones for music or podcasts.
- Price: set a budget and balance it with the features and quality of the headphones.
- Cheaper options may compromise on noise cancellation, while more expensive options offer better noise isolation.